Solar Panel calculator
Unsure of what a solar installation will cost? Take out the guesswork with tailored answers in just a few clicks.
Why use our calculator?
With the rising cost of energy in the UK and an increasing focus on sustainability, installing solar panels is a smart investment for your home or business. Our Solar Panel Calculator takes the guesswork out of the process, providing you with tailored answers in just a few clicks.
How many solar panels will you need?
What size system is right for you?
How much money could you actually save?
How the Solar Panel Calculator Works.
Our Solar Panel Calculator is designed to give you a quick, accurate estimate based on your specific needs. Simply enter details about your property, energy usage, and location, and the calculator will determine:
- Number of panels needed: Based on your roof size and energy consumption.
- System size: The total capacity of your solar panel system in kilowatts (kW).
- Potential savings: How much you could save annually by generating your own electricity.
- Carbon footprint reduction: The environmental impact of switching to solar energy.
Factors That Affect Your Solar Panel Needs.
Energy Usage
Your household’s or business’s annual energy consumption is a key factor. The more energy you use, the larger the system you'll need.Roof Size and Orientation
We always take into account your roof’s size, shape, and orientation (south-facing roofs are ideal in the UK).Sunlight Availability
While the UK isn’t known for its sunshine, solar panels still perform well here, especially in areas with minimal shading.Battery Storage
Adding a solar battery can increase your savings by storing unused energy for later use.How Much Money Can You Save with Solar Panels?
The savings depend on various factors, including energy usage, electricity tariffs, and government incentives. On average, UK households save between £850 and £1,300 annually on electricity bills. With solar batteries, you can maximise savings by using stored energy during peak rate hours. To find out how much you could save with a solar panel installation, use our Solar Panel Calculator above or visit our savings page!
Get Started Today!
Switching to solar power is one of the best ways to save money and reduce your carbon footprint. Use our Solar Panel Calculator now to find out how much you could save and how many panels you’ll need. Contact us for a free consultation and take the first step towards a brighter, more sustainable future.
What do our clients say?
Check out our Google reviews
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I can’t believe how easily the whole experience went. I called up and luckily they were in my area so came to see me the same day. We agreed what... read more we needed and within three weeks we had our panels on the roof with all the kit fitted and working, that included them registering us to supply back energy to the grid. Absolutely first class. Thank you
Kevin Morris
04/03/2026A superb performance and excellent product. The team are clean, tidy, courteous and extremely knowledgeable about all aspects of their product. Highly recommended and Mark is a professional and knowledgeable... read more person. Thank you all from start to finish well done fit solar.
Rob Wilkins
29/01/2026 -
The installation of our solar panels and battery by Fit Solar was carried out without any problems and Mark and his team were very helpful throughout the job and would... read more recommend Fit Solar to anyone thinking about have a solar system.
Julian Wilson
28/01/2026Fit solar came in early September and within 48 hours the array had filled my battery and started export to the grid. Despite it being late in the year and... read more now nearly the end of January I am delighted that it has drastically cut my electricity bills and provided future payment at the off time of the year. The system is easy to use and monitor from my Ipad or computer. I recommend fit solar to advise and install.
John Hancox
27/01/2026 -
Fit solar installed a 20kwh Fox battery system for us. It was fitted in 1.5 days with minimal disruption. It is now saving us thousands of £ per year, simply... read more by allowing us to use cheap overnight electricity.
Mike Wooldridge
26/01/2026Extremely glad I chose Fit Solar, they did a first class job from start to finish, nothing was too much trouble, a brilliant positive team . I am and will continue... read more to recommend this A+++ company. Very many thanks to you and your team Mark. Phil Thorne Gloucestershire
Phil Thorne
22/01/2026 -
We bought a solar battery system through them. They gave great advice and a very competitive price. They took care and pride in their work on the installation and guided... read more us on making sure we were getting the best out of the system. Plus they are MCS certified, giving us peace of mind and it meant we could get a grant from our bank to help pay for the work. And so I highly recommend Fit Solar.
Mark Clubb
22/01/2026Excellent local solar installer. Just had 21 solar panels fitted, givenergy battery, inverter and car charger. Installation started sooner than I expected and communication was very good. Any issues or queries... read more were answered very quickly and they've done a tidy job. The quality of materials used is better than some others for example the bird guards are metal rather than plastic. I much preferred using a local installer rather than a national company for the quality of installation and follow up. Recommended local company for solar installation.
Alex Lattimore
12/04/2025 -
Cant fault them . I used fit solar to upgrade my existing battery area after trying the installer of my current system wanted x2 the price of what Fit solar... read more wanted to increase the battery size. Their was a few issues mixing 2 different versions of FOXess batteries, but with there help all fixed. Nothing was to much trouble for them. A1 company. Lee
lhud64
07/03/2025 -
Cant fault them . I used fit solar to upgrade my existing battery area after trying the installer of my current system wanted x2 the price of what Fit solar... read more wanted to increase the battery size. Their was a few issues mixing 2 different versions of FOXess batteries, but with there help all fixed. Nothing was to much trouble for them. A1 company. Lee
lhud64
06/03/2025 -
I was recommended by a friend to approach FitSolar for a quote to install a ten-panel solar system having already obtained quotes from four other local and national firms. Mark... read more Chandler came out to our property to offer friendly advice with no pressure on committing to going ahead with an installation. Mark was very patient in providing a number of quotes for different variations including whether to include batteries to the system or not and how many. The quote that we proceeded on was I consider a fair price, not the cheapest and not the dearest. The installation was carried out by friendly employees, and nothing was to much trouble re agreeing how and where to install the panels and batteries. After the installation ‘both’ Marks visited to inspect the installation and to explain how to manage and monitor the panels and the energy they provide. They mentioned that they monitor all their customers systems, so should an issue arise, which is not expected, they would pick it up before the customer. Highly recommended.
Mark Dickens
13/12/2023I was recommended by a friend to approach FitSolar for a quote to install a ten-panel solar system having already obtained quotes from four other local and national firms. Mark... read more Chandler came out to our property to offer friendly advice with no pressure on committing to going ahead with an installation. Mark was very patient in providing a number of quotes for different variations including whether to include batteries to the system or not and how many. The quote that we proceeded on was I consider a fair price, not the cheapest and not the dearest. The installation was carried out by friendly employees, and nothing was to much trouble re agreeing how and where to install the panels and batteries. After the installation ‘both’ Marks visited to inspect the installation and to explain how to manage and monitor the panels and the energy they provide. They mentioned that they monitor all their customers systems, so should an issue arise, which is not expected, they would pick it up before the customer. Highly recommended.
Mark Dickens
30/11/2023 -
We have been really impressed with the quality of work carried out throughout the whole process of planning and fitting our Solar energy system. The team were organised, communicated well... read more and very thorough, and we are delighted with the quality of their work and the results are fantastic. We would highly recommend their services.
Nicola Price
13/09/2023 -
I was recommended FIT Solar by another electrician. From the first contact they were timely, efficient and very knowledgeable. I followed their recommendations and I could not be happier with... read more the outcome. They installed three 5kw batteries, and a 6kw solar panel system. I only have electricity at the house (no gas) and I run an electric vehicle. I charge the car solely at home, heat my hot water and my electricity bill has halved already. I would highly recommend this local company.
Paul Francis
13/09/2023We have been really impressed with the quality of work carried out throughout the whole process of planning and fitting our Solar energy system. The team were organised, communicated well... read more and very thorough, and we are delighted with the quality of their work and the results are fantastic. We would highly recommend their services.
Nicola Price
29/08/2023 -
After several proposals and quotes we chose Fit Solar to install our system, absolutely no regrets, cost effective,professional advice and installation by a considerate and capable team.
John Goodman
31/05/2023I was recommended FIT Solar by another electrician. From the first contact they were timely, efficient and very knowledgeable. I followed their recommendations and I could not be happier with... read more the outcome. They installed three 5kw batteries, and a 6kw solar panel system. I only have electricity at the house (no gas) and I run an electric vehicle. I charge the car solely at home, heat my hot water and my electricity bill has halved already. I would highly recommend this local company.
Paul Francis
17/05/2023
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Cant fault them . I used fit solar to upgrade my existing battery area after trying the installer of my current system wanted x2 the price of what Fit solar wanted to increase the battery size. Their was a few issues mixing 2 different versions of FOXess batteries, but with there help all fixed. Nothing was to much trouble for them. A1 company. Lee
lhud64
07/03/2025




